In Process Data Products

Displaying 1 - 4 of 4

SPRUCE S1 Bog Areal Coverage of Hummock and Hollow Microtopography

Aerial coverage of hummocks and hollows was estimated in July 2012 in ten 4 m × 4 m plots each along three 60-m t transects (30 plots total) in the S1-Bog. Hollows were defined as the lowest elevation within plots and were typically at or near the height of the water table, hummocks included area above hollows, including the sides of the hummocks.

Citation: 

Ontl, T.A. and C. M. Iversen. 2016. SPRUCE S1 Bog Areal Coverage of Hummock and Hollow Microtopography. Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, U.S. Department of Energy, Oak Ridge, Tennessee, U.S.A. DOI: http://dx.doi.org/10.3334/CDIAC/spruce.023

SPRUCE S1 Bog Tree Basal Area and Understory Vascular Plant Community Composition

The composition and cover of woody and understory species, along with the timing of stem growth, were characterized near minirhizotron installations at the south and north ends of the S1 bog in order to understand the relationship between root dynamics and the surrounding plant communities.
There are three data streams:
(1) Woody species basal area -- the number, basal area, and distance from the center point of all trees within a 5-m radius of each minirhizotron pair, which were quantified in 2011,

Citation: 

Iversen CM, Garrett A, Martin A, Turetsky MR, Norby RJ, Childs J, Ontl TA. 2017. SPRUCE S1-Bog tree basal area and understory vascular plant community composition. Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, U.S. Department of Energy, Oak Ridge, Tennessee, U.S.A. http://dx.doi.org/10.3334/CDIAC/spruce.024

SPRUCE S1 Bog Plant-available Nutrients Assessed With Ion-exchange Resins, 2011-2012

This data set consists of observations of plant-available nutrients assessed using ion-exchange resin capsules incubated serially in aerobic and anaerobic peat layers beginning in 2011. Data were collected from 2011 to 2012 (prior to the construction of the SPRUCE experimental plots) at the southern end of the S1 Bog at three depths in hollow microtopography only.

Citation: 

Iversen C.M, J. Latimer, T.A. Ontl, A. Burnham, D.J. Brice, J. Childs, H.M. Vander Stel. 2017. SPRUCE S1 Bog Plant-available Nutrients Assessed With Ion-exchange Resins, 2011-2012. Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, Oak Ridge, Tennessee, USA. http://dx.doi.org/10.3334/CDIAC/spruce.022

 

SPRUCE Plant-available Nutrients Assessed with Ion-exchange Resins in Experimental Plots, Beginning in 2013

This data set consists of observations of plant-available nutrients assessed using ion-exchange resin capsules incubated serially in aerobic and anaerobic peat layers beginning in 2013 in the SPRUCE experimental plots at four depths in hummock microtopography and two depths in hollow microtopography. Data will be periodically added to until the conclusion of the SPRUCE experiment.

Citation: 

Iversen C.M, J. Latimer, T.A. Ontl, A. Burnham, D.J. Brice, J. Childs, H.M. Vander Stel. 2017. SPRUCE Plant-available Nutrients Assessed with Ion-exchange Resins in Experimental Plots, Beginning in 2013. Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, Oak Ridge, Tennessee, USA. http://dx.doi.org/10.3334/CDIAC/spruce.036